Viessmann SCU224 Instrukcja Obsługi Pobierz pdf (Strona 16)

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SCU224

System layout 4

The controller calculates the temperature differences

between collector sensor S1 and tank sensors S2 and S3. If

the differences are larger than or identical to the adjusted

switch-on temperature differences (DT1O / DT2O), the

solar pump will be operated by relay 1, and the respective

tank zone will be loaded until the switch-off temperature

differences (DT1F / DT2F) or the maximum tank tempera-

S4 / TR

Arr 4

Display Channels

Channel Description Terminal Page

COL x Temperature collector S1 37

TSTB x Temperature tank 1 bottom S2 37

TSTT x Temperature tank 1 at the top S3 37

S4 x Temperature sensor 4 S4 37

TR x* Temperature return sensor S4 37

n % x Pump speed relay R1 38

hP1 x Operating hours R1 R1 38

hP2 x Operating hours R2 R2 38

kWh

Heat quantity kWh - 38

MWh

Heat quantity MWh - 38

TIME x Time - 34

tures (S1MX / S2MX) are reached. The priority logic causes

priority loading of the upper zone of the tank, if possible.

The 3-way-valve will be operated by relay 2 then.

Sensor S4 can optionally be connected for measurement

purposes.

If energy metering (OHQM) is activated, sensor S4 has to

be connected as return sensor.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 51 52

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Viessmann SCU224 Instrukcja Obsługi Strona 16